It is at the moment of publication that the undisputed possessory right passes over into the much disputed right to multiply copies, and that the vexed question of the true theory of copyright property arises. The broad view of literary property holds that the one kind of copyright is involved in the other. The right to have is the right to use. An author cannot use--that is, get beneficial results from--his work, without offering copies for sale. He would be otherwise like the owner of a loaf of bread who was told that the bread was his until he wanted to eat it. That sale would seem to contain "an implied undertaking" that the buyer has liberty to use his copy, but not to multiply it. Peculiarly in this kind of property the right of ownership consists in the right to prevent use of one's property by others without the owner's consent. The right of exclusion seems to be indeed a part of ownership. In the case of land the owner is entitled to prevent trespass, to the extent of a shot-gun, and in the same way the law recognizes the right to use violence, even to the extreme, in preventing others from possession of one's own property of any kind. The owner of a literary property has, however, no physical means of defence or redress; the very act of publication by which he gets a market for his productions opens him to the danger of wider multiplication and publication without his consent. There is, therefore, no kind of property which is so dependent on the help of the law for the protection of the real owner. {Sidenote: Inherent right} The inherent right of authors is a right at what is called common law--that is, natural or customary law. The common law, says Kent, "includes those principles, usages, and rules of action applicable to the government and security of person and property which do not rest for their authority upon any express and positive declaration of the will of the legislature." "The common law or _lex non scripta_," says Blackstone, "depends upon its having been used time out of mind; or, in the solemnity of our legal phrase, time whereof the memory of man runneth not to the contrary." So far as concerns the undisputed rights before publication, the copyright laws are auxiliary merely to common law. Rights exist before remedies; remedies are merely invented to enforce rights. "The seeking for the law of the right of property in the law of procedure relating to the remedies," says Copinger in his standard English work on "The law of copyright," "is a mistake similar to supposing that the mark on the ear of an animal is the cause, instead of the consequence, of property therein." {Sidenote: Statutory penalties} After the invention of printing it became evident that new methods of procedure must be devised to enforce common law rights. Copyright became, therefore, the subject of statute law, by the passage of laws imposing penalties for a theft which, without such laws, could not be punished. {Sidenote: Statute of Anne}